kernel: Linux kernel: Use-after-free in teql queueing discipline can lead to privilege escalation

A flaw was found in the Linux kernel's networking component. A local attacker with low privileges could exploit a design issue in the teql queueing discipline, which is responsible for managing network traffic. By sending specially crafted network packets, an attacker could trigger a use-after-fr...

Important: Red Hat Security Advisory: kernel-rt security update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

kernel: Linux kernel: Use-after-free in teql queueing discipline can lead to privilege escalation

A flaw was found in the Linux kernel's networking component. A local attacker with low privileges could exploit a design issue in the teql queueing discipline, which is responsible for managing network traffic. By sending specially crafted network packets, an attacker could trigger a use-after-fr...

Important: kernel-rt security update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: pagepool: Fix use-after-free in pagepoolrecycleinring CVE-2025-38129 kernel: Linux kernel:A use-after-free in bridge multicast in...

RHEL 8 : kernel-rt (RHSA-2026:3110)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:3110 advisory. The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirement...

CVE-2026-23210 ice: Fix PTP NULL pointer dereference during VSI rebuild

In the Linux kernel, the following vulnerability has been resolved: ice: Fix PTP NULL pointer dereference during VSI rebuild Fix race condition where PTP periodic work runs while VSI is being rebuilt, accessing NULL vsi-rxrings. The sequence was: 1. iceptpprepareforreset cancels PTP work 2...

Characterizing and Modeling the GitHub Security Advisories Review Pipeline

GitHub Security Advisories GHSA have become a central component of open-source vulnerability disclosure and are widely used by developers and security tools. A distinctive feature of GHSA is that only a fraction of advisories are reviewed by GitHub, while the mechanisms associated with this revie...

CVE-2026-23074

In the Linux kernel, the following vulnerability has been resolved: net/sched: Enforce that teql can only be used as root qdisc Design intent of teql is that it is only supposed to be used as root qdisc. We need to check for that constraint. Although not important, I will describe the scenario th...

CVE-2026-23105

CVE-2026-23105 (Linux kernel) : A fix in the net/sched/qfq code changes the activation check of a class from relying on the child qdisc’s qlen to using cl_is_active in qfq_rm_from_ag. This patch makes activation determination more consistent and aims to prevent exploits that could manipulate chil...

CVE-2026-23074 net/sched: Enforce that teql can only be used as root qdisc

In the Linux kernel, the following vulnerability has been resolved: net/sched: Enforce that teql can only be used as root qdisc Design intent of teql is that it is only supposed to be used as root qdisc. We need to check for that constraint. Although not important, I will describe the scenario th...

EUVD-2026-5470

In the Linux kernel, the following vulnerability has been resolved: net/sched: Enforce that teql can only be used as root qdisc Design intent of teql is that it is only supposed to be used as root qdisc. We need to check for that constraint. Although not important, I will describe the scenario th...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005191)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005191 advisory. In the Linux kernel, the following vulnerability has been resolved: netsched: schsfq: don't allow 1 packet limit The current implementation does not work correctly...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-004955)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-004955 advisory. In the Linux kernel, the following vulnerability has been resolved: netsched: schsfq: fix a potential crash on gsoskb handling SFQ has an assumption of always being...

CVE-2026-22999

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: do not free existing class in qfqchangeclass Fixes qfqchangeclass error case. cl-qdisc and cl should only be freed if a new class and qdisc were allocated, or we risk various UAF...

UBUNTU-CVE-2026-22999

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: do not free existing class in qfqchangeclass Fixes qfqchangeclass error case. cl-qdisc and cl should only be freed if a new class and qdisc were allocated, or we risk various UAF...

CVE-2026-22976

A flaw was found in the Linux kernel's schqfq Quick Fair Queueing scheduler. This vulnerability allows a local user to trigger a NULL pointer dereference in the qfqreset function. The issue arises when multiple qfqclass objects incorrectly reference the same leafqdisc, leading to an attempt to...

CVE-2026-22976

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: Fix NULL deref when deactivating inactive aggregate in qfqreset qfqclass-leafqdisc-q.qlen 0 does not imply that the class itself is active. Two qfqclass objects may point to the same leafqdisc. This happens whe...

CVE-2026-22976

CVE-2026-22976 affects the Linux kernel’s net/sched sch_qfq, where two qfq_class objects can reference the same leaf_qdisc. In certain teardown paths (e.g., when a qdisc is pending destruction via tc_new_tfilter and another qdisc is root-attached), a shared leaf_qdisc may have q.qlen > 0 while...

CVE-2026-22976

In the Linux kernel, the following vulnerability has been resolved: net/sched: schqfq: Fix NULL deref when deactivating inactive aggregate in qfqreset qfqclass-leafqdisc-q.qlen 0 does not imply that the class itself is active. Two qfqclass objects may point to the same leafqdisc. This happens whe...